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CVE-2026-73505 high CVSS 7.8

Code Injection in github.com/jandedobbeleer/oh-my-posh (CVE-2026-73505)

Summary

Code injection in github.com/jandedobbeleer/oh-my-posh (CVE-2026-73505). Successful exploitation can lead to full system takeover. Exploitable via cmd. Mitigation: upgrade to 29.35.1 or later.

Original description

The description as published by the source.

Summary

Oh My Posh re-renders the resolved path string, which contains the raw folder names taken from the filesystem, through the Go text/template engine. That engine's function map exposes a cmd function that runs arbitrary OS commands. A directory whose name contains a Go template expression is therefore evaluated when the prompt renders, giving arbitrary command execution as the current user as soon as the shell is inside (or below) that directory. The built-in default configuration is affected.

Details

src/segments/path.go, setStyle():

// make sure we resolve all templates
if txt, err := template.Render(pt.Path, pt); err == nil {
    pt.Path = txt
}

pt.Path is built from the raw folder-name components of the current working directory (colorizePath inserts each folder name verbatim via fmt.Sprintf(folderFormat, element)). The whole string is then passed to template.Render, which parses and executes it with the full function map from src/template/func_map.go, including:

func cmd(command string, args ...string) (string, error) {
    output, err := env.RunCommand(command, args...)
    return strings.TrimSpace(output), err
}

Any template syntax present in an untrusted folder name is evaluated. The render runs after the path-style switch unconditionally, so every path style is affected, and the default config (src/config/default.go) contains a path segment.

PoC

Config (a single default path segment):

{ "version…

Source: GitHub Security Advisories (Global) NVD GitHub Advisory

Auto-generated summary

Assembled by SecPulse from the source data (CVSS, CWE, affected versions) using templates — no AI involved. Check the original description and references below for exact details.

A vulnerability tracked as CVE-2026-73505 has been found in github.com/jandedobbeleer/oh-my-posh.
Attackers can target a specific entry point like cmd over the network to misuse the product.
Successful exploitation can lead to full system takeover. CVSS score: 7.8/10.
What to do: upgrade github.com/jandedobbeleer/oh-my-posh to 29.35.1 or later.
If unsure, ask your IT team or search "github.com/jandedobbeleer/oh-my-posh CVE-2026-73505" on the vendor's site.

CVE-2026-73505 (github.com/jandedobbeleer/oh-my-posh) — CWE-94 / CVSS v3 7.8
Attack vector: local / unauthenticated
Attack surface: cmd / pt.Path / colorizePath / template.Render
Patched: 29.35.1 — apply immediately
Plan: 1) Audit SBOM/dependencies, 2) Stage→prod upgrade, 3) Add WAF/proxy monitoring on affected endpoints, 4) Hunt IOCs in logs.
Refs: see the GHSA / vendor advisory / patched release linked on this page.

❓ What is the problem

Arbitrary code execution (CWE-94) exists in github.com/jandedobbeleer/oh-my-posh. Attackers reach the vulnerable code path via cmd without authentication.

📍 Affected scope

Check the vendor advisory for the affected versions of github.com/jandedobbeleer/oh-my-posh. Attack surface: cmd / pt.Path / colorizePath / template.Render.

🔥 Severity

Severity: High (CVSS 7.8/10). Successful exploitation can lead to full system takeover.

🔧 How to fix

Update to 29.35.1.

🛡️ Workaround

Until the patch is applied: disable the affected feature, apply WAF rules, or restrict access via network ACLs.

🔍 Detection

Search webserver/proxy logs for unusual request patterns matching this CVE's known IOCs. Run grep -r 'github.com/jandedobbeleer/oh-my-posh' . against your dependency files (package-lock.json, requirements.txt, go.sum) to find affected services.

Response actions

Concrete steps and command examples for SOC/SRE teams to execute in order

  1. 1
    Identify exposure identify 
    grep -r 'github.com/jandedobbeleer/oh-my-posh' . | grep -v node_modules

    リポジトリと本番環境の依存ファイル (package-lock.json / requirements.txt / go.sum / Gemfile.lock 等) で github.com/jandedobbeleer/oh-my-posh を grep し、稼働しているサービス・バージョンを把握する。

  2. 2
    Apply patch patch 
    Upgrade github.com/jandedobbeleer/oh-my-posh to 29.35.1

    ステージング環境で 29.35.1 に上げて回帰テスト → 本番反映。回帰テストはアプリの主要ハッピーパスを含めること。

  3. 3
    Post-deployment verification verify 
    Confirm patched version is live in production

    パッチ適用後、ステージングで PoC または同等の悪用パターンを再現して脆弱性が閉じたことを確認。本番ではアクセスログ・WAF でアラート再発が無いか継続監視。

Affected packages

go github.com/jandedobbeleer/oh-my-posh
[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"29.35.1"}]}]

References

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